Speedometer for motor-cycles.



J. TAYLOR.

SPEEDOMETER FOR MOTOR CYCLES.

APPLICATION FILED JUNE 6, 1913.

1,102,364, Patented July 7, 1914.

THE NORRIS PETERS c0.. PHOTO-LITHQ. WASHINGTON, D. c.

JOHN TAYLOR,

OF STONEY STRATFORD, ENGLAND.

SPEEDOMETER FOR MOTOR-CYCLES.

To all whom it may concern Be it known that 1, JOHN TAYLOR, a subject ofthe King of England, resid ng at akefield Lodge, Stoney Stratford, 1nthe county of Buckingham, England, have invented new and usefulImprovements Relating toSpeedometers for Motor-Cycles, of which thefollowing is a specification.

l/Vhere a speedometer is geared through a flexible shaft to the frontwheel of that class of motor cycle in which such wheel is coupled to thefork through spring levers or the like, it has been common practiceheretofore to support the end of said flexible shaft, and the toothedwheel through which it is driven from a toothed wheel on the cyclewheel, in a bracket which is secured to the axle of said wheel. Consequently any movement of said front wheel axle relatively to the cycleframe tends to cause the bracket to oscillate around the axle and theindex of the speedometer to vibrate apart from any variation of thespeed of the cycle.

Now my invention has for its object an attachment designed to preventsuch vibration comprising a lever of suitable size and shape adapted tocarry the end of the flexible shaft on one end thereof and journalednear that end on a bush carried by the cycle front wheel axle orotherwise fulcrumed thereon. The opposite end of this lever has hingedto it one end of a short rod the other end of which is hinged to abracket or the equivalent on the front fork of the cycle so that saidlever cannot oscillate about the axle of the cycle wheel but is free tomove with it.

An attachment constructed according to my invention is illustrated bythe accompanying drawings, and I will further describe the same by theaid thereof.

Of these drawings Figure 1. is a side elevation of the front wheel axleand a portion of the front fork of a motor cycle with the attachment forsupporting the speedometer driving gear applied thereto, and Fig. 2. isa plan thereof.

As illustrated the cycle frame is of the well known type wherein thefront wheel axle av is connected to each of the arms 2) of thefront forkthrough a short arm 0 hinged or pivoted thereto, while it is connectedto the head or other part of the frame through stays d and a spring orsprings not shown.

Specification of Letters Patent.

Application filed June 6, 1913 Patented July i, 1914. Serial No.772,032.

Journaled on a sleeve 0, secured to one end of the axle a by a nut f, isa lever g the longer arm of which is connected through a short rod orlink In to a bracket or clip secured to the arm Z) of the front fork ofthe cycle frame. The shorter arm of this lever has secured to it acasing in which is arranged the usual mechanism for gearing the flexibleshaft of a speedometer to a spur wheel on the front wheel of the cycle.This may consist of two spindles journaled in said casing and gearedtogether by worm gearing; one of said spindles being connected to theend of the flexible shaft of the speedometer, while the other carries aspur wheel 70 gearing with the spur wheel it on the cycle front wheel.

The length of the member 0 is equal to that of the member is, and thedistances between the points at which the members 5 and g are connectedto the member 75 and at which they are connected to the member a andmember 0 respectively are equal. It will thus be seen that these membersor the portions thereof referred to form in combination a parallelmotion and the lever g and with it the speedometer driving mechanism maythus move with the front wheel axle, but is prevented from oscillatingaround it and so causing the index of the speedometer to vibrate.

Having now particularly described and ascertained the nature of my saidinvention, and in what manner the same is to be per formed, I declarethat what I claim is 1. In motor cycles, in combination, a front fork, afront wheel axle, a yielding connection between said axle and said forkwhereby said axle may move relatively to said fork, a lever pivotallymounted intermediate its ends to said axle, speedometer drivingmechanism mounted upon one end of said lever, and a yielding connectionbetween the other end of said lever and said fork, said two yieldingconnections forming in combination with portions of the lever and frontfork a parallel motion.

2. In motor cycles, in combination, a front fork, a front wheel axle, ayielding connection between said axle and said fork whereby said axlemay move relatively to said fork, a lever pivotally mounted intermediateits ends to said axle, speedometer driving mechanism mounted upon oneend of said lever, and a yielding connection between the other end ofsaid lever and said fork, said second mentioned yielding connecname tothis specification in the presence of tion being of the same length as,and partwo subscribing witnesses.

allel to said first mentioned yielding conneo- T V 7 tion, said twoyielding connections forin- JOHB FAX 5 ing in combination with portionsof the le- Vitnesses:

ver and front fork a parallel motion. CASTLE SMITH,

In testimony whereof I have signed my FREDERICK JAMES BINGHAM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C."

